Today you have looked at transforming XML documents into other data formats (mostly HTML). The XSLT standard defines an XML stylesheet that specifies how to transform an XML document into a new format. XSLT is commonly used to transform XML data into HTML for presentation by a Web browser.
An XSLT stylesheet defines a set of rules. Each rule
Is matched against elements in an XML source document
Defines transformations that are applied to the matched element to create the transformed data
Can be applied to a selected element or multiple elements including a complete tree hierarchy of elements
Uses the XPath notation to match XML elements
XSLT compilers are designed to address some of the performance problems of XSLT processors. An XSLT compiler has two components:
A compiler that generates a translet (a set of Java classes) from an XSLT stylesheet
A runtime processor that applies a translet to an XML document to perform the transformation
The XSL technology also identifies a portable device independent grammar (XSL-FO) for defining formatting requirements and the document data. XSL-FO is not being widely adopted by the industry at the present time.
You have now finished your excursion into XML and XML transformations. Tomorrow, you will return to Java programming and the J2EE platform to study Java and J2EE design patterns.
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